User’s Manual MSO/UPO2000 Seri es
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a.
Rising edge
：
Set the timer to start when the rising edge of the input signal through the trigger
level.
b.
Falling edge
：
Set the timer to start when the falling edge of the input signal through the trigger
level
.
c.
Random edge
：
Set the timer to start when the rising edge or the falling edge of the input signal
through the trigger level
.
(2)
Timeout
Compare timeout with
△
T, it will be triggered when the condition is met. The range can be set 8ns ~
10s.
7.10 Duration Trigger
With duration trigger selected, the oscilloscope identifies the trigger condition by looking for the duration of
the specified codes. The codes are the combination of channel logic "AND", and the value of each channel
can be H (high), L (low), or X (ignored).It will be generated when the duration (
△
T) of the code meets a preset
time, as shown in Figure 7-8.
Figure 7-8
(1)
Pattern
It has three modes H, L and X. The pattern setting of each channel is displayed at the bottom of the
screen, as shown in Figure 7-8.
a.
H
：
Set the code value of the selected channel to "High", that is, the voltage level is higher than the
trigger level of the channel.
b.
L
：
Set the code value of the selected channel to "Low", that is, the voltage level is lower than the
trigger level of the channel.
c.
X
：
Set the code value of the selected channel to "Ignored", that is, the channel is not part of the
△
T
